Testing transformer grounding assembly
By designing a motor-driven transmission system and a worm gear mechanism to automatically replace the angle steel grounding electrode, the problem of unstable current conduction caused by corrosion of the angle steel grounding electrode in acidic soil was solved, achieving stable current conduction and neat wiring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-03-13
AI Technical Summary
Existing angle steel grounding electrodes are prone to corrosion in acidic soils, resulting in excessively high soil resistivity, which affects the current conduction to the ground and creates potential equipment failure hazards.
Design a test transformer grounding assembly that uses a motor-driven transmission system and a bevel gear and worm gear mechanism to automatically replace the angle steel grounding electrode. Combined with a copper wire storage mechanism, it ensures stable current conduction.
It enables automatic replacement of the angle steel grounding electrode when it is corroded, ensuring that the current is effectively conducted to the ground, avoiding equipment failure, and the storage of the copper wire protects the neatness of the line.
Smart Images
Figure CN223993199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer grounding technology, and in particular to a test transformer grounding assembly. Background Technology
[0002] A test transformer is a high-voltage transformer used for testing electrical equipment. It operates based on the principle of electromagnetic induction. When the primary winding is connected to an AC power source, an alternating magnetic flux is generated in the core. This flux passes through the secondary winding. By changing the turns ratio of the primary and secondary windings, voltage transformation can be achieved, thus obtaining the required high-voltage output. It is used for withstand voltage tests and insulation resistance tests on electrical equipment, including the core, windings, and insulation structure. During use, the test transformer needs to be grounded, requiring a grounding assembly. The grounding assembly consists of a grounding conductor, connecting fittings, and grounding electrodes. The grounding conductor is usually made of copper because copper has excellent conductivity, ensuring that current flows efficiently to the ground under fault or normal grounding conditions. The connecting fitting is typically a clamp-like shape with two arms. The inner side of the arms usually has serrated patterns to increase friction with the grounding conductor and grounding terminal, ensuring a tight clamping effect. The grounding clamp is mostly made of copper alloy, which has both good conductivity and sufficient mechanical strength to ensure reliable clamping. The grounding electrode is usually an angle steel grounding electrode.
[0003] Existing angle steel grounding electrodes are usually made of hot-dip galvanized angle steel. They are long and narrow, and due to their shape and material characteristics, they can withstand certain mechanical forces and are relatively inexpensive. One end is processed into a sharp shape for easy driving into the ground. Angle steel grounding electrodes are suitable for most soil conditions, especially in areas with relatively firm soil. However, when the soil is acidic, the grounding electrode is prone to corrosion, and the soil moisture and various salts will accelerate the corrosion of the grounding electrode. If the grounding electrode is not replaced, the soil resistivity will be too high, preventing the grounding electrode from effectively conducting current to the ground, thereby affecting equipment performance and causing potential failures. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a test transformer grounding component, which aims to improve the problem in the prior art where corrosion of the angle steel grounding electrode leads to excessively high soil resistivity, preventing current from being effectively conducted into the ground and causing potential hazards.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a test transformer grounding assembly, including a fixed box. A fixed plate is provided on the top of the fixed box. A motor protective cover is fixedly connected to the top left side of the fixed plate. A second motor is fixedly connected inside the motor protective cover. The output end of the second motor passes through the top left side of the fixed plate and is fixedly connected to a second transmission rod. A first bevel gear is fixedly connected to the bottom of the outer wall of the second transmission rod. A second bevel gear is meshed with the outer wall of the first bevel gear. A moving rod is fixedly connected to the inner wall of the second bevel gear. A worm gear is fixedly connected to the middle of the outer wall of the moving rod. The left and right sides of the moving rod rotate with the left and right ends inside the fixed box. The worm gear is connected to a worm wheel on its outer wall. The inner wall of the worm wheel has an internal thread, and a threaded rod is threaded onto the inner wall of the internal thread. An angle steel grounding electrode is fixedly connected to the top of the threaded rod. An L-shaped groove is formed on the rear side of the top of the fixing plate, and the inner side of the L-shaped groove is slidably connected to the outer wall of the angle steel grounding electrode. A threaded groove is formed in the middle of the top of the fixing plate, and the inner side of the threaded groove is threadedly connected to the outer wall of the threaded rod. A main grounding wire is threadedly connected to the top right side of the angle steel grounding electrode. A grounding box is slidably connected to the right side of the main grounding wire. A wire take-up mechanism is provided on the top of the grounding box for wire take-up protection.
[0006] This utility model has the following beneficial effects:
[0007] The winding mechanism includes a motor fixing block. The bottom of the motor fixing block is fixedly connected to the top right end of the grounding box. A motor is fixedly connected to the left side of the motor fixing block. A transmission rod is fixedly connected to the output end of the motor. Multiple baffles are fixedly connected to the left and right sides of the outer wall of the transmission rod. Multiple plastic copper wires are rotatably connected to the middle of the outer wall of the transmission rod. A rotating wheel is rotatably connected to the other end of the plastic copper wire. A connecting block is connected to the inner wall of the rotating wheel. A slider is fixedly connected to the bottom of the connecting block. A reciprocating rod is slidably connected to the bottom of the slider.
[0008] This utility model has the following beneficial effects:
[0009] A support block 1 is fixedly connected to the left side of the outer wall of the transmission rod 1 near the edge. Multiple support blocks 2 are fixedly connected to both ends of the reciprocating rod near the edge. The bottom of the support block 1 and the support block 2 are fixedly connected to the top left side of the grounding box.
[0010] This utility model has the following beneficial effects:
[0011] A storage box is fixedly connected to the top of the grounding box, and the right side of the inner wall of the storage box is fixedly connected to the right side of the motor fixing block.
[0012] This utility model has the following beneficial effects:
[0013] A display screen is fixedly connected to the upper front part of the grounding box, and a lock hole is fixedly connected to the left side of the middle part of the grounding box.
[0014] This utility model has the following beneficial effects:
[0015] A main grounding post is fixedly connected to the left side of the inner wall of the grounding box, and multiple small grounding posts are fixedly connected to the upper middle part of the inner wall of the grounding box.
[0016] This utility model has the following beneficial effects:
[0017] The tops of the plurality of small grounding posts are each fixedly connected to a plurality of wires, and a hinge is fixedly connected to the front right side of the outer wall of the grounding box.
[0018] This utility model has the following beneficial effects:
[0019] Multiple buttons are fixedly connected to the lower part of the outer wall of the grounding box, and a base is fixedly connected to the bottom of the grounding box.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, when motor two is started, it drives transmission rod two to rotate, and bevel gear one to rotate. Then, bevel gear two and moving rod rotate together, driving the worm gear fixed on the moving rod to rotate together. At this time, the worm wheel follows the worm gear to rotate, and then the worm wheel pushes out the threaded rod. The threaded rod drives the angle steel grounding electrode to be pushed out from the fixed plate. The new angle steel grounding electrode is put in through the L-shaped groove. Motor two is started in reverse. Similarly, the worm wheel will push the threaded rod and the angle steel grounding electrode back together. This realizes the effect of improving the current conduction to the ground by replacing the angle steel grounding electrode when it is corroded.
[0022] 2. In this utility model, when motor one is started, motor one drives transmission rod one to rotate, which retracts the plastic copper wire. At the same time, the rotating wheel rotates, and the slider inside the rotating wheel slides back and forth along the track on the reciprocating rod, sequentially retracting the plastic copper wire onto transmission rod one. There is a baffle on transmission rod one, which prevents the wire from getting tangled during recycling. This achieves the effect of protecting and storing the plastic copper wire in the storage box when not in use. Attached Figure Description
[0023] Figure 1 This is a front perspective view of a test transformer grounding assembly proposed in this utility model;
[0024] Figure 2 This is a partial structural diagram of the grounding box of a test transformer grounding assembly proposed in this utility model;
[0025] Figure 3 This is a partial structural diagram of the transmission rod of a test transformer grounding assembly proposed in this utility model;
[0026] Figure 4 This is a partial structural breakdown diagram of the reciprocating rod of a test transformer grounding assembly proposed in this utility model;
[0027] Figure 5 This is a schematic diagram of a partial worm gear structure of a test transformer grounding assembly proposed in this utility model;
[0028] Figure 6 This is a partial structural breakdown diagram of the threaded rod of a test transformer grounding assembly proposed in this utility model.
[0029] Legend:
[0030] 1. Fixing box; 2. Cable winding mechanism; 201. Motor fixing block; 202. Motor 1; 203. Transmission rod 1; 204. Baffle; 205. Plastic copper wire; 206. Reciprocating rod; 207. Slider; 208. Connecting block; 209. Rotating wheel; 3. Motor protective cover; 4. Motor 2; 5. Transmission rod 2; 6. Bevel gear 1; 7. Bevel gear 2; 8. Moving rod; 9. Worm gear; 10. Worm wheel; 11. Internal thread; 12. Threaded rod; 13. Angle steel grounding electrode; 14. Fixing plate; 15. L-shaped groove; 16. Threaded groove; 17. Main grounding wire; 18. Grounding box; 19. Base; 20. Button; 21. Lock hole; 22. Display screen; 23. Storage box; 24. Main grounding post; 25. Small grounding post; 26. Wire; 27. Hinge; 28. Support block 1; 29. Support block 2. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see the appendix Figure 1 Appendix Figure 5 and attached Figure 6This utility model provides an embodiment of a test transformer grounding assembly, including a fixed box 1. A fixed plate 14 is provided on the top of the fixed box 1. A motor protective cover 3 is fixedly connected to the top left side of the fixed plate 14. A second motor 4 is fixedly connected inside the motor protective cover 3, providing protection for the second motor 4. The output end of the second motor 4 passes through the top left side of the fixed plate 14 and is fixedly connected to a second transmission rod 5. A first bevel gear 6 is fixedly connected to the bottom of the outer wall of the second transmission rod 5. A second bevel gear 7 is meshed with the outer wall of the first bevel gear 6. A moving rod 8 is fixedly connected to the inner wall of the second bevel gear 7, making the transmission more efficient. A worm gear 9 is fixedly connected to the middle of the outer wall of the moving rod 8. The left and right sides of the moving rod 8 are rotatably connected to the left and right ends inside the fixed box 1. A worm wheel 10 is meshed with the outer wall of the worm gear 9, so that the entire assembly can only rotate with the worm gear 9. The worm gear 10 rotates in the direction of rotation. An internal thread 11 is formed on the inner wall of the worm gear 10. A threaded rod 12 is threadedly connected to the inner wall of the internal thread 11. An angle steel grounding electrode 13 is fixedly connected to the top of the threaded rod 12. The threaded rod 12 can push out the angle steel grounding electrode 13 together. An L-shaped groove 15 is formed on the rear side of the top of the fixing plate 14. The inner side of the L-shaped groove 15 is slidably connected to the outer wall of the angle steel grounding electrode 13. A threaded groove 16 is formed in the middle of the top of the fixing plate 14, allowing the angle steel grounding electrode 13 to be removed. The inner side of the threaded groove 16 is threadedly connected to the outer wall of the threaded rod 12. A main grounding wire 17 is threadedly connected to the top right side of the angle steel grounding electrode 13. A grounding box 18 is slidably connected to the right side of the main grounding wire 17, providing overall protection. A wire take-up mechanism 2 is provided on the top of the grounding box 18 for wire take-up protection.
[0033] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 The winding mechanism 2 includes a motor fixing block 201. The bottom of the motor fixing block 201 is fixedly connected to the top right end of the grounding box 18, so that the motor 202 is fixedly fixed. The motor 202 is fixedly connected to the left side of the motor fixing block 201. The output end of the motor 202 is fixedly connected to the transmission rod 203, which improves the transmission performance. Multiple baffles 204 are fixedly connected to the left and right sides of the outer wall of the transmission rod 203, so that each copper wire 205 is individually stored. Multiple copper wires 205 are rotatably connected to the middle of the outer wall of the transmission rod 203. The other end of the copper wire 205 is rotatably connected to a rotating wheel 209, which will automatically store the copper wire 205. The inner wall of the rotating wheel 209 is connected to a connecting block 208. The bottom of the connecting block 208 is fixedly connected to a slider 207. The bottom of the slider 207 is slidably connected to a reciprocating rod 206, so that the rotating wheel 209 will rotate back and forth on the reciprocating rod 206.
[0034] Please see the appendix Figure 1Appendix Figure 3 and attached Figure 4 A support block 28 is fixedly connected to the left side of the outer wall of the transmission rod 203 near the edge, which improves its stability and durability. Multiple support blocks 29 are fixedly connected to both ends of the reciprocating rod 206 near the edge, which improves the structural strength of the reciprocating rod 206. A storage box 23 is fixedly connected to the top of the grounding box 18. The right side of the inner wall of the storage box 23 is fixedly connected to the right side of the motor fixing block 201, which improves the overall stability. A display screen 22 is fixedly connected to the upper middle part of the front end of the grounding box 18. A lock hole 21 is fixedly connected to the left side of the middle part of the grounding box 18, which makes the whole structure safer.
[0035] Please see the appendix Figure 1 and attached Figure 2 A main grounding post 24 is fixedly connected to the left side of the inner wall of the grounding box 18. Multiple small grounding posts 25 are fixedly connected to the upper middle part of the inner wall of the grounding box 18, so that the individual grounding wires are grounded together. Multiple wires 26 are fixedly connected to the top of the multiple small grounding posts 25, so that the individual grounding wires are grounded together. A hinge 27 is fixedly connected to the front right side of the outer wall of the grounding box 18, so that the grounding box 18 can be opened for operation. Multiple buttons 20 are fixedly connected to the lower middle part of the outer wall of the grounding box 18. A base 19 is fixedly connected to the bottom of the grounding box 18, which improves the overall stability of the structure.
[0036] Working principle: When the angle steel grounding electrode 13 is corroded and needs to be replaced, motor 4 is started. At this time, motor 4 drives transmission rod 5 to rotate. Then, transmission rod 5 drives bevel gear 6 to rotate. At the same time, bevel gear 6 drives bevel gear 7 and moving rod 8 to rotate together, which drives worm gear 9 fixed on moving rod 8 to rotate together. At this time, worm wheel 10 rotates together with worm gear 9. At this time, worm wheel 10 pushes out threaded rod 12. Threaded rod 12 drives angle steel grounding electrode 13 to be pushed out from fixed plate 14. The new angle steel grounding electrode 13 is put in through L-shaped groove 15. Motor 4 is started in reverse. Similarly, worm wheel 10 pushes threaded rod 12 and angle steel grounding electrode 13 back together. This realizes the effect of improving the current conduction to the ground by replacing angle steel grounding electrode 13 when it is corroded.
[0037] After the test transformer is completed, motor 202 is started. At this time, motor 202 drives transmission rod 203 to rotate together, retracting the copper wire 205. The copper wire 205 drives the rotating wheel 209 to rotate. As the rotating wheel 209 rotates, the slider 207 inside the rotating wheel 209 slides back and forth along the track on the reciprocating rod 206, retracting the copper wire 205 sequentially onto the transmission rod 203. The transmission rod 203 has a baffle 204 to prevent the wire from getting tangled during recycling. This achieves the effect of protecting and storing the copper wire 205 in the storage box 23 when not in use.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A test transformer grounding assembly comprising a stationary box (1), characterized in that: The top of the fixed box (1) is provided with a fixed plate (14), the top left side of the fixed plate (14) is fixedly connected with a motor protection cover (3), the inside of the motor protection cover (3) is fixedly connected with a motor two (4), the output end of the motor two (4) penetrates through the top left side of the fixed plate (14) and is fixedly connected with a transmission rod two (5), the outer wall bottom of the transmission rod two (5) is fixedly connected with a bevel gear one (6), the outer wall of the bevel gear one (6) is meshed with a bevel gear two (7), the inner wall of the bevel gear two (7) is fixedly connected with a movement rod (8), the outer wall middle of the movement rod (8) is fixedly connected with a worm (9), the left and right sides of the movement rod (8) are rotatably connected with the inside left and right ends of the fixed box (1), the outer wall of the worm (9) is meshed with a worm gear (10), the inner wall of the worm gear (10) is provided with an internal thread (11), the internal thread (11) is threadedly connected with a threaded rod (12), the top of the threaded rod (12) is fixedly connected with an angle steel grounding electrode (13), the top rear side of the fixed plate (14) is provided with an L-shaped groove (15), the inside of the L-shaped groove (15) is slidably connected with the outer wall of the angle steel grounding electrode (13), the top middle of the fixed plate (14) is provided with a threaded groove (16), the inside of the threaded groove (16) is threadedly connected with the outer wall of the threaded rod (12), the top right side of the angle steel grounding electrode (13) is threadedly connected with a general grounding wire (17), the right side of the general grounding wire (17) is slidably connected with a grounding box (18), the top of the grounding box (18) is provided with a take-up mechanism (2), and the take-up mechanism (2) is used for take-up protection.
2. A test transformer grounding assembly as set forth in claim 1, further characterized by: The take-up mechanism (2) comprises a motor fixing block (201), the bottom of the motor fixing block (201) is fixedly connected with the top right end of the grounding box (18), the left side of the motor fixing block (201) is fixedly connected with a motor one (202), the output end of the motor one (202) is fixedly connected with a transmission rod one (203), the outer wall left and right sides of the transmission rod one (203) are fixedly connected with a plurality of baffles (204), the outer wall middle of the transmission rod one (203) is rotatably connected with a plurality of plastic copper wires (205), the other end of the plastic copper wire (205) is rotatably connected with a rotating wheel (209), the inner wall of the rotating wheel (209) is connected with a connecting block (208), the bottom of the connecting block (208) is fixedly connected with a sliding block (207), and the bottom of the sliding block (207) is slidably connected with a reciprocating rod (206).
3. A test transformer grounding assembly as set forth in claim 2, wherein: The outer wall left side of the transmission rod one (203) is fixedly connected with a supporting block one (28) near the edge, the left and right ends of the reciprocating rod (206) are fixedly connected with a plurality of supporting blocks two (29) near the edge side, and the bottoms of the supporting block one (28) and the supporting block two (29) are fixedly connected on the top left side of the grounding box (18).
4. A test transformer grounding assembly as set forth in claim 1, further characterized by: The top of the grounding box (18) is fixedly connected with a storage box (23), and the inner wall right side of the storage box (23) is fixedly connected with the right side of the motor fixed block (201).
5. A test transformer grounding assembly as set forth in claim 1, further characterized by: The front end middle upper part of the grounding box (18) is fixedly connected with a display screen (22), and the middle left side of the grounding box (18) is fixedly connected with a lock hole (21).
6. A test transformer grounding assembly as set forth in claim 1, further characterized by: The inner wall left side of the grounding box (18) is fixedly connected with a total grounding stud (24), and the inner wall middle upper part of the grounding box (18) is fixedly connected with a plurality of small grounding studs (25).
7. A test transformer grounding assembly as set forth in claim 6, further characterized by: The top of the plurality of small grounding studs (25) is fixedly connected with a plurality of electric wires (26), and the outer wall right side front end of the grounding box (18) is fixedly connected with a hinge (27).
8. A test transformer grounding assembly as set forth in claim 1, further characterized by: The outer wall middle lower part of the grounding box (18) is fixedly connected with a plurality of buttons (20), and the bottom of the grounding box (18) is fixedly connected with a base (19).